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Cloud computing offerings have evolved

There are nearly a dozen different options to move your data and processes to the cloud. The two main distinctions, as it were, are Private and Public clouds.

Public clouds: Also known as a shared hosting cloud, such provisions are provided “as a service” over the Web with little or no control over the underlying technological basis. A public cloud is appealing to many decision-makers as it reduces complexity and offers short lead times in testing and launching.

Private clouds: Also referred to as an internal cloud or enterprise cloud, also also functions “as a service” but is deployed over a business’s intranet or via a hosted data center. This is a private product for a company or organization offering advanced security and highly viable for fault tolerant solutions and customization not possible in a public cloud.

Here is a fine infographic from the Internap IT think-tank presenting a comparison of the two different cloud models.

Public cloud is used as a service via Internet by the users, while a private cloud, as the name suggests is organized within certain boundaries like firewall settings and is fully managed and monitored by the users working on it in an organization. Users have to pay a monthly bill for public cloud services, but in private cloud money is charged on the basis of per Gb usage along with bandwidth transfer fees. Public cloud functions on the prime principle of storage demand scalability, which means it requires no hardware device. On the contrary, no hardware is required even in private cloud, but the data stored in the private cloud can only be shared amongst users of an organization and third party sharing depends upon trust they build with them. It is also entirely monitored by the business entity where it is running.